<template>
	<view class="login-container">
		<!-- 提示登录的图标 -->
		<uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
		<!-- 登录按钮 -->
		<button type="primary" class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
		<!-- 登录提示 -->
		<view class="tips-text">登录后尽享更多权益</view>
	</view>
</template>

<script>
	import {
		mapMutations,mapState
	} from 'vuex'
	export default {
		name: "my-login",
		data() {
			return {

			};
		},
		computed: {
			...mapState('m_user',['redirectInfo'])
		},
		methods: {
			...mapMutations('m_user', ['updateUserInfo', 'updateToken','updateRedirectInfo']),
			//授权之后，获取用户的基本信息
			getUserInfo(e) {

				// 判断是否获取用户信息成功
				if (e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权！')

				// 获取用户信息成功， e.detail.userInfo 就是用户的基本信息
				this.updateUserInfo(e.detail.userInfo)
				this.getToken(e.detail)
			},
			
			async getToken(info) {
				//获取code对应的值
				const [err, res] = await uni.login().catch(err => err)
				if (err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败！')
				//准备参数
				const query = {
					code: res.code,
					encryptedData: info.encryptedData,
					iv: info.iv,
					rawData: info.rawData,
					signature: info.signature
				}
				//TODO 这里链接失效 获取数据在下面
				// const {data: loginResult} = await uni.$http.post('/api/public/v1/users/wxlogin', query)

				// === 开发阶段：模拟返回数据 ===
				const loginResult = {
				  message: {
				    user_id: 12,
				    user_email_code: null,
				    is_active: null,
				    user_sex: "男",
				    user_tel: "",
				    user_xueli: "本科",
				    user_hobby: "",
				    user_introduce: null,
				    create_time: 1525402223,
				    update_time: 1525402223,
				    token: "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOjIzLCJpYXQiOjE1NjQ3MzAwNzksImV4cCI6MT"
				  },
				  meta: {
				    msg: "登录成功",
				    status: 200
				  }
				}
				//TODO 这里在那时将判断去除  假设访问登录地址成功
				if(loginResult.meta.status !== 200) return uni.$showMsg('登录失败')
				//直接吧token保存到vuex中
				this.updateToken(loginResult.message.token)//这里假设为Bearer xxx
				//登录成功 跳转回之前页面
				this.navigateBack()
			},
			navigateBack () {
				if(this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
					uni.switchTab({
						url:this.redirectInfo.from,
						complete() {
							this.updateRedirectInfo(null)
						}
					})
				}
			}

		}
	}
</script>

<style lang="scss">
	.login-container {
		// 登录盒子的样式
		height: 750rpx;
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
		background-color: #f8f8f8;
		position: relative;
		overflow: hidden;

		// 绘制登录盒子底部的半椭圆造型
		&::after {
			content: ' ';
			display: block;
			position: absolute;
			width: 100%;
			height: 40px;
			left: 0;
			bottom: 0;
			background-color: white;
			border-radius: 100%;
			transform: translateY(50%);
		}

		// 登录按钮的样式
		.btn-login {
			width: 90%;
			border-radius: 100px;
			margin: 15px 0;
			background-color: #c00000;
		}

		// 按钮下方提示消息的样式
		.tips-text {
			font-size: 12px;
			color: gray;
		}
	}
</style>